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This species is accepted, and its native range is S. Tanzania to S. Tropical Africa.
A specimen from Kew's Herbarium

[FTEA]

Lamiaceae (Labiatae), A.J. Paton, G. Bramley, O. Ryding, R.M. Polhill, Y.B. Harvey, M. Iwarsson, F. Willis, P.B. Phillipson, K. Balkwill, C.W. Lukhoba, D.F. Otieno, & R.M. Harley. Flora of Tropical East Africa. 2009

Type
Type: Zambia, Lukandu R., Allen 471 (K!, holo.)
Morphology General Habit
Perennial herb, 15–30 cm tall, usually with a small woody rootstock and roots with 1–3 × 0.5 cm tubers
Morphology Stem
Stems erect, quadrangular, pubescent with short patent and appressed hairs and scattered sessile glands, denser on the inflorescence axis
Morphology Leaves
Leaves confined to a basal rosette, glandular-punctate, elliptic, 4–12 × 3–5 cm, sinuate to crenate, apex round or obtuse, base cuneate to attenuate, glabrous or sparsely pubescent above or on veins beneath; petiole 5–20 mm long
Morphology Reproductive morphology Inflorescences
Inflorescence lax, with 6-flowered verticils 10–25 mm apart; bracts purple or green, erect above forming an inconspicuous apical coma, becoming reflexed below, linear to narrowly ovate, 3–5 × 1–2 mm; pedicels ± 3 mm long, spreading or ascending, slightly flattened or terete
Morphology Reproductive morphology Flowers Calyx
Calyx purplish, 5 mm long at anthesis; fruiting calyx often vertical, parallel to the inflorescence axis, 9 mm long
Morphology Reproductive morphology Flowers Corolla
Corolla pink or mauve, sometimes with white markings, 9–11 mm long; tube straight, parallel-sided, dilating slightly towards throat, 6–8 mm long; posterior lip perpendicular to tube; anterior lip cucullate, enclosing stamens, becoming horizontal at anthesis
Morphology Reproductive morphology Fruits
Nutlets broadly ovoid, 2 mm long, minutely tuberculate, producing a small amount of mucilage when wet.
Ecology
Seasonally flooded grassland, Brachystegia woodland; 900–1800 m
Conservation
Least concern; widely distributed
Note
Similar to O. schimperi but usually easily recognised by the basal rosette of leaves. However, O. allenii does occasionally have 1 or 2 pairs of cauline leaves as well as the basal rosette. Also differs from O. schimperi in having tuberous roots.
Distribution
Range: Congo-Kinshasa, Zambia, Malawi, Mozambique and Zimbabwe Flora districts: T4 T7 T8

Native to:

Malawi, Mozambique, Tanzania, Zambia, Zaïre, Zimbabwe

Orthosiphon allenii (C.H.Wright) Codd appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Jan 1, 2008 Bingham [12636], Zambia K000248338
Allen, C.E.F. [471], Zambia K000347202 Unknown type material

First published in Bothalia 8: 160 (1964)

Accepted by

  • Calane da Silva, M., Izdine, S. & Amuse, A.B. (2004). A Preliminary Checklist of the Vascular Plants of Mozambique: 1-184. SABONET, Pretoria.
  • Govaerts, R. (2003). World Checklist of Selected Plant Families Database in ACCESS: 1-216203. The Board of Trustees of the Royal Botanic Gardens, Kew.
  • Paton, A.J., Bramley, G., Ryding, O., Polhill, R., Harvey, Y., Iwarsson, M., Willis, F., Phillipson, P., Balkwill, K., Lukhoba, C., Otiend, D & Harley (2009). Lamiaceae (Labiatae) Flora of Tropical East Africa: 1-430.
  • Paton, A.J., Bramley, G., Ryding, O., Polhill, R.M., Harvey, Y.B., Iwarsson, M., Otieno, D., Balkwill, K., Phillipson, P.B., Harley, R.M. & Willis, F. (2013). Flora Zambesiaca 8(8): 1-346. Royal Botanic Gardens, Kew.

Literature

Flora of Tropical East Africa

  • Bothalia 8: 160 (1964).

Flora of Tropical East Africa
Flora of Tropical East Africa
http://creativecommons.org/licenses/by-nc-sa/3.0

Herbarium Catalogue Specimens
Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0